WO1989008792A1

WO1989008792A1 - Damper disc

Info

Publication number: WO1989008792A1
Application number: PCT/JP1989/000254
Authority: WO
Inventors: Yasuyuki Hashimoto; Takuji Yoshimura; Syogo Ohga
Original assignee: Kabushiki Kaisha Daikin Seisakusho
Priority date: 1988-03-09
Filing date: 1989-03-08
Publication date: 1989-09-21
Also published as: DE3990204C2

Abstract

A damper disc having an output plate (6) between a pair of side plates (1), two torsion springs (23) provided in series in the bores in each of these plates, and floats (25) provided between the two torsion springs so that the floats can be moved in the circumferential direction. In order to improve the torsional characteristics of the damper disc, the output plate (6) is divided into inner and outer members, or the floats (25) are connected by an annular connector (37) so that the floats cannot be moved out, or the floats (25) are formed out of a resin of a low coefficient of friction.

Description

Specification

Dumper disk

Technical field

The present invention relates to a damper disk.

Background art

Generally, in order to reduce the muffled sound during low-speed running, it is necessary to secure the necessary rotation torque, keep the torsional rigidity low, and widen the torsional angle range of the second stage.

—In order to reduce idle noise during idling, it is necessary to ensure extremely low rigidity and extremely low hysteresis torque.

However, in order to effectively reduce both the idling noise during idling and the muffled noise during low-speed driving, the arrangement of the first and second torsion springs with a conventional damper disk There is too much space in the space.

The object of claim 1 of the present application is to separate the output side plate inside and outside, thereby ensuring low rigidity and low hysteresis torque at the time of idling to reduce idle noise, and to further reduce the noise. By arranging the torsion springs in series via the motor body, a wide range of torsional angles can be secured at low speeds to reduce the noise (muffled sound) at low speeds.

The inventions of claims 2, 3, 4, and 5 provide the friction spring between the float body and the window hole as small as possible when the torsion springs are arranged in series via the float. It is also intended to do so.

According to the invention described in claim 6, the output side plate is separated into the flange of the hub and the intermediate plate outside the hub, and By making one plate with two plate members, manufacturing can be facilitated.

Disclosure of the invention

In the invention according to claim 1, the car-side plate is separated into a flange integral with the spline hub and an intermediate plate on the outer periphery thereof, and the intermediate plate is arranged between a pair of input-side side plates. The intermediate plate and the intermediate plate are brought into contact via the second-stage friction member, and the intermediate plate and the flange of the output side hub are brought into contact via the first-stage friction member having a low coefficient of friction. A first-stage torsion spring having a small spring constant is disposed in the 0th window and the corresponding 1st window of the intermediate plate, and the flange and the intermediate plate are connected via the first-stage torsion spring. The second stage torsion spring 5 with a large spring constant is connected to the second window of the intermediate plate and the window of the side plate corresponding to the second window to transmit torque. Place at least two in series with the hole ϊA circumferentially movable float body is interposed between the two second-stage torsion springs arranged in a row, and the intermediate plate and side plate are interposed via the second-stage torsion spring. Are connected so that torque can be transmitted.

0 At the time of idling, the hub and intermediate plate are relatively twisted to compress the first-stage torsion spring having a small spring constant, and a low-hysteresis torque is generated by the first-stage friction member. This can reduce idle noise.

At low speed, the second-stage torsion spring is compressed, and at the same time, a relatively high hysteresis torque is generated by the second-stage friction member. The second stage torsion spring is connected in series via a float Since it is arranged at a relatively low torsional stiffness, it can cover a wide range of torsional angles, thereby reducing muffled noise during low-speed running.

According to a second aspect of the present invention, a tongue spring arrangement window hole is formed in each of the pair of input side plates and the output side plate between the side plates, and the same window hole is formed. At least two torsion springs are arranged in series, and the torsion spring connects the side plate and the output side plate so that torque can be transmitted. A float body movable in the circumferential direction is interposed between the torsion springs, and the float body is formed of a light plastic material with a low friction coefficient.

The two torsion springs in series are compressed, and at the same time the body between the torsion springs moves in the circumferential direction. Fretting hardly occurs even if it touches the radially outer edge of the float.c In addition, since it is light, the centrifugal force at the time of rotation is also small, and it is not unnecessarily necessary depending on the movement of the float. There is no increase in stable hysteresis torque.

According to a third aspect of the present invention, a plurality of torsion spring arrangement windows are formed in a pair of input side plates and an output plate between the side plates, respectively, and a radius of the output plate is formed. The outer peripheral edge in the direction is formed so that the radially outer edge of the window hole is closed, and at least two torsion springs are connected in series to each window hole in the output plate. The torsion spring connects the side plate and the output side plate so that torque can be transmitted, and a circumference is provided between two serial torsion springs in each window hole. The floats that can move in the directions are interposed, and the side surfaces of the floats are integrally connected by an annular connector.

When the floats are moved, the floats are connected by the annular connector, so that the floats do not protrude radially outward due to centrifugal force and are not rubbed around the window hole. Therefore, fretting does not occur between the float body and the window hole periphery, and the movement of the float body does not increase the unstable hysteresis torque more than necessary.

According to a fourth aspect of the present invention, a plurality of transmission spring arrangement window holes are formed in a pair of input side plates and an output plate between the side plates, respectively. The outer peripheral edge in the radial direction is formed in an annular shape so that the radially outer end of the window hole is closed, and at least two transition springs are provided in each window hole of the output plate. It is arranged in series, and the side plate and output side plate are connected so that torque can be transmitted by the torsion spring, and moves in the direction of the circle between two series of torsion springs in each window hole. A guide plate is fixed on the rain side surface of each float body in the axial direction, with a possible float body interposed, and an annular connecting body that connects between the guide plates is provided at the inner peripheral end of each guide plate. They are integrally formed.

When the float is moved, no fretting occurs between the float and the window hole, and the movement of the float increases the unstable hysteresis torque more than necessary. There is no.

According to a fifth aspect of the present invention, a plurality of window holes for torsion spring arrangement are formed in a pair of input side plates and an output plate between the side plates, respectively, and each window of the output side plate is formed. In the hole At least two springs are arranged in series, and the side spring and the output plate are connected so that torque can be transmitted by the torsion springs. A float body that can move in the circumferential direction is interposed between the toe-shock springs, and each float body is pinned to an annular connecting body that is located radially inward from the float body. 0 is swingably connected via

When the floats are moved, since the inner ends of the floats are integrally connected by an annular connector, no fretting occurs between the floats and the periphery of the window hole. The unstable hysteresis torque does not increase more than necessary due to the movement of the motor. Float body Anbara Nsu the spring load is accordingly also if connexion is swung around the pin, to absorb unbalance _(according to claim 6 invention, the output-side plates spline ,, Bed and integral Separated into a flange and an intermediate plate on the outer periphery, an intermediate plate is arranged between the input side plates, and an output hub is arranged on the inner peripheral side of the intermediate plate. The flange of the hub and the intermediate annular body are connected so that torque can be transmitted through the torsion spring, and torque is transmitted between the intermediate plate and the side plate via the second-stage torsion spring with a large spring constant. As possible, and as an intermediate plate, a pair of left and right thick annular intermediate plate members are superimposed and joined by rivets, and a second stage torsion is applied to the outer peripheral portion of the plate between the sub-plates. Window for the spring Forming a first-stage torsion spring receiving and expanding portion at the inner peripheral end of the intermediate plate, and a torque-connecting string consisting of concave and convex portions between the flange of the hap and the flange of the hap. Forming the hopper mechanism, expanding part Friction members are arranged between the shaft and the side plate, and between the expanded portion and the flange of the hub.

BRIEF DESCRIPTION OF THE FIGURES

Fig. 1 is a side view of a damper disk to which claims 1, 2 and 6 of the present application are applied, with a part cut away. Fig. 2 is a cross-sectional view taken along the line の in Fig. 1; Fig. 4 is a cross-sectional view of III-III, Fig. 4 is an enlarged side view of the float body, Fig. 5 is a V-V cross-sectional view of Fig. 4, Fig. 6 is a torsional characteristic diagram, and Fig. 7 is claims 1 and 3. Fig. 8 is a cross-sectional view of Fig. 7 with the ^-を cross section, Fig. 9 is a cross section of IX-K of Fig. 7, and Fig. 10 is a book Side view of the damper disk to which claims 1 and 4 are applied, partially cut away, FIG. 11 is a sectional view taken along the line XI-XI of FIG. 10, and FIG. Fig. 13 is a cross-sectional view of the applied damper disk, cut away as shown in Fig. 13. Fig. 13 is a cross-sectional view of XBT-xm in Fig. 1, Fig. 15 shows another embodiment applying claim 1 It is a surface view.

BEST MODE FOR CARRYING OUT THE INVENTION

(Example 1)

FIG. 3 is a longitudinal sectional view (m-IE sectional view of FIG. 1) of a dambar disk to which claims 1, 2 and 6 of the present application are applied, and a pair of input side plates 1 are mutually connected. They are arranged at regular intervals in the axial direction and are connected to each other by rivets 2 at their outer peripheral ends. The cushioning plate 4 is fixed to the outer edge of the side plate by the rivet 2 and the input cuffing 3 is fixed to both sides of the cushioning plate 4. And Pretzia I It is clamped between the plates and torque is input.

Output plates 6 and 11 are arranged between both side plates 1, and the output plates 6 and 11 are intermediate plates between the flange 11 integrated with the output hub 10 and the outer peripheral side. Divided into 6 The annular intermediate plate 6 is formed of a first pair of members, is formed to be thick, overlaps with each other, and is integrally connected by the rivet 7. A plurality of enlarged portions 6a that open in the axial direction are formed at the inner peripheral end portion of the intermediate plate 6. <The flange 11 of the output side hub 10 is arranged in the enlarged portion 6a. The output hub 10 is, for example, spline-fitted for output. A second-stage friction member 13 having a large friction coefficient is disposed between the inner peripheral portion of the intermediate plate 6 and the inner peripheral portion of the side plate 1, and the inner peripheral portion of the intermediate plate 6 and the flange are disposed. A first-stage friction member 12 having a small friction coefficient is arranged between the flanges 11.

A window hole (notch) 16 for the first-stage spring is formed in the flange 11, and a corresponding first window hole 17 is formed in the enlarged portion 6 a of the intermediate plate 6. The first-stage torsion spring 21 having a small spring constant is disposed in the windows 16 and 17 so as to be freely compressible in the circumferential direction. That is, the first-stage torsion spring 21 comes into contact with the circumferential edge of the window hole 16 of the flange 11 via the end stoppers 22, and the spring receivers 22 are both axially And is in contact with the circumferential edge of the first window hole 17 of the plate 6. FIG. 2 is a cross-sectional view of a portion different from that of FIG. 1 (a cross-sectional view taken along the line Π in FIG. 1). In FIG. A hole 18 is formed, and a window hole 19 is formed in the side plate 1 corresponding to the second window hole 18. A second-stage torsion spring 23 is disposed in the holes 18 and 19 so as to be freely compressible in the circumferential direction.

In FIG. 1, three second window holes 18 are formed at equal intervals in the circumferential direction, and two two-stage tj torsion springs 23 are provided in one window hole 18. The float bodies 25 are arranged in series in the circumferential direction, and are freely movable in the circular direction between the second-stage torsion springs 23 in one window hole 18. The two-stage E1 torsion spring 23 is of a parent-child spring type, and has a child coil spring 27 inside.

0 The window holes 16 of the flange 11 are also formed in three places at intervals in the circumferential direction, and a recess 30 is formed in the portion between the window holes of the flange 11, while the intermediate plate 6 is formed. A protrusion 32 protruding into the recess 30 is formed in the recess 30. The circumferential gap dl between the recess 30 and the protrusion 32 regulates the range of the first-stage torsion angle.

5 Float body 25 is made of hard resin with low coefficient of friction, such as polyamide resin, and is light in weight, formed in a trapezoidal shape that becomes thinner toward the center of the clutch, The outer peripheral end 緣 2 c is in contact with the radially outer edge 18 c of the second window hole 18 _{ on both axial sides of the float body 25, as shown in FIG. The plate 35 is fixed by pins 36, and both outer and inner ends of the guide plate 35 in the radial direction both extend to both side portions of the intermediate plate 6, thereby Float body 25 is prevented from falling off in the axial direction.

The guide plate 35 is formed in a substantially inverted triangular shape 5 as shown in FIG. 4, and the spring receiving contact of the torsion spring is flush with the spring receiving surface M of the float body 25. _N Extending portions 35a extending in both circumferential directions are formed at radially outer ends of the guide plates 35, respectively. As the material of the guide plate 35, for example, an iron plate is used, thereby improving the strength against the spring pressure. Pin 36 is made of metal.

In the illustrated embodiment, as the stopper mechanism for directly coupling the torque, a concave portion is formed in the flange 11 of the hub 10 and a convex portion is formed in the intermediate plate 6, but the convex portion is formed in the flange 11. A portion may be formed, and a recess may be formed in the intermediate plate 6.

Next, the operation will be described. At the time of idling, the intermediate plate 6 and the side plate 1 are integrally twisted, for example, in the same direction as the rotation direction R with respect to the flange 11 in FIG. Compress 1 At this time, the first-stage friction member 12 between the intermediate plate 6 and the flange 11 in FIG. 2 is rubbed, so that a small hysteresis torque is generated.

When the vehicle starts running at low speed from idling, the torsional torque is applied, so that the recess 3 〇 of the flange 11 in FIG. 1 comes into contact with the projection 3 2 of the intermediate plate 6 in FIG. 1 1 and the intermediate plate 6 are integrated, and the side plate 1 starts to twist in the R direction, compressing the second-stage torsion spring 23. At this time, the second-stage friction member 13 between the side plate 1 and the intermediate plate 6 in FIG. 2 is rubbed, so that a relatively large hysteresis torque is generated.

The 2nd stage compression of the torsion spring 23 also moves the float body 25 in FIG. 1 in the circumferential direction, and the outer peripheral edge 25 c of the float body 25 in the radial direction and the outside of the window hole 18. The side edge 緣 18 c rubs, but 0 Since the rotor body 25 itself is made of a polyamide resin having a low coefficient of friction, there is almost no fretting, and since it is light, there is little centrifugal force.

Fig. 6 shows a torsional characteristic diagram.Hysteresis torque is extremely small in the first-stage torsion angle range 0 to 01, and relatively large in the second-stage torsion angle range 範囲 1 to θ. High hysteresis torque H is generated.

In addition, by arranging two second-stage torsion springs 23 in FIG. 1 in series in one window hole 18, the second-stage ti fej 0 angle range 0 1 to 0 in FIG. 2 becomes wider, which makes it possible to effectively reduce muffled noise during low-speed driving.

At the maximum torsion angle Θ2, the second stage torsion spring 23 is fully compressed.

(Example 2)

5 The embodiment shown in FIGS. 7 to 9 is a damper disk to which claims 1 and 3 are applied. In FIG. 7, the three floats 25 are connected on both sides in the axial direction by a ring-shaped connector 37. As shown in FIG. 8, a pair of annular connecting bodies 37 are arranged on the outer sides in the free direction of both side plates 1, and a portion corresponding to the floating body 25 is located at the center in the axial direction. It is fixed to the side of the guide plate 35 using the rivet 36. The annular connector 37 is made of, for example, an iron plate.

Other structures are the same as those in FIGS. 1 to 5 of the first embodiment, and the same parts are denoted by the same reference numerals.

5 According to this structure, when the float body 25 shown in FIG. 7 moves in the circumferential direction due to the compression of the second stage torsion 23, three flows are formed. Since the float body 25 is integrally connected by the annular connector 37, the float body 25 does not protrude outward in the radial direction. Therefore, there is no concern that the unnecessary and unstable hysteresis torque due to friction between the radial outer edge 25a of the float body 25 and the peripheral edge 18a of the window hole 18 increases.

Further, since the connecting body 37 is arranged on the side of the float body 25, it also serves as a protective cover for the second-stage torsion spring 23.

(Example 3)

0 The embodiment shown in FIGS. 10 and 11 is a damper disk to which claims 1 and 4 are applied. In FIG. 1, the three floats 25 are supported by guide plates 35, respectively, and the inner peripheral ends of the guide plates 35 are integrally connected by an annular connecting member 47. The two connecting bodies 47 do not contact the force << disposed between the widened portion 6 a of the intermediate plate 65 and the side plate 1, and the plates 1 and 6. Other structures are the same as those in FIGS. 1 to 5 of the first embodiment, and the same parts are denoted by the same reference numerals.

According to this structure, the float body 25 in FIG. 07 moves in the circumferential direction due to the compression of the second stage G-section 23, and the three float bodies 25 are annularly connected. Since they are integrally connected by the body 47, the float body 25 does not protrude outward in the radial direction. Therefore, there is no concern that the unnecessary and unstable hysteresis torque due to the friction between the radial outer edge 25a of the float body 25 and the peripheral edge 18a of the window hole 18 will increase. Since the connecting body 47 and each guide plate 35 are integrally formed, the number of parts And reduce weight.

(Example 4)

(1) The embodiment shown in FIGS. 12 to 14 is a damper disk to which claims 1 and 5 of the present application are applied.

The three floats 25 and the support plate 35 are movably connected to the annular connector 37 via pins 38. In other words, the annular connector 37 is disposed radially inward of the float 25 and integrally has protruding pieces 37a protruding outward at three places of force. A pin hole 3 is formed at the radially inner end of the cylindrical plate 25 and the servo plate 35 as shown in the lower half of FIG. Pin 3 8 is揷通so the pin holes 3 9 such as float member 2 5 having a radius direction ye, _c annular connecting the both end portions are fixed to the projecting piece 3 7 a of the annular body 3 7 The body 37 is made of, for example, an iron plate.

5 According to this structure, when the float body 25 in FIG. 12 moves in the circumferential direction due to the compression of the second stage torsion 23, the three float bodies 25 are connected by the annular connecting body 37. Since they are connected, the float body 25 does not protrude outward in the radial direction. Therefore, there is no fear that unstable hysteresis torque increases due to the friction between the radially outer end of the float body 25 and the peripheral edge 180a of the window hole 18.

Even if the spring load of the second stage torsion spring 23 is imbalanced, the float body 25 swings around the pin 38 to absorb the imbalance and absorbs the imbalance. Therefore, the compression operation of each two-stage B5 torsion spring 23 is stable, and a smooth torsional operation is obtained. In addition, since the above-mentioned imbalance can be absorbed, durability can be ensured even when the width of the inner peripheral end (network portion) 35b of the support plate 35 or the like in the direction of the circle l is reduced. Further, thereby, the net portion 6b of the intermediate plate 6 can be secured to a sufficient width and the durability of the intermediate plate 6 can be maintained without narrowing the torsion angle range. .

(Example 5)

FIG. 15 shows a damper disk to which claim 1 is applied. The hub 10 and the intermediate flange 41 have substantially the same width as the flange 11, and a pair of thin sub-plates fixed to both sides of the intermediate flange 41. It has 4 2. Other structures are the same as in FIGS. 1 to 5.

The invention's effect

According to the invention described in claim 1 of the present application, the output side plate is separated into the flange 11 and the intermediate plate 6, so that low rigidity and low hysteresis torque characteristics can be obtained during riding. The idling noise can be reduced, and two second-stage torsion springs 23 are arranged in series in the same window hole.On the other hand, a wide screw angle can be taken when driving at low speed, and relatively small rigidity is sufficient. The torque can be secured and the muffled sound of low-speed running can be reduced.c

According to the invention described in claim 2 of the present application, the float body 25 interposed between the two torsion springs 23 is formed of a light plastic material having a low coefficient of friction. Even when the float body 25 is in contact with the end of the window hole 18 during compression of the spring, fretting hardly occurs, and the centrifugal force is small due to its light weight. Therefore, the movement of the float 25 There is no need to worry about an unstable hysteresis torque increase, and the above-mentioned abnormal noise prevention effect can be kept good.

According to the invention of claims 3, 4 and 5, the float body 25 interposed between the two torsion springs 23 is integrally connected by the annular connecting body 537 (47), This prevents the radially outward protrusion due to the centrifugal force, so that the float body 25 does not rub against the end of the window hole 18 during compression of the torsion spring. Therefore, there is no need to worry about an increase in the movement of the float body 25 (unstable hysteresis torque caused by this movement), and the above-described effect of preventing abnormal noise can be kept good.

• In the inventions according to claims 3 and 4, the radially outer end of the output side plate (between plates 6) is formed annularly so that the radially outer edge of the window hole 18 is closed. Since it is formed, the strength of the output 5-side plate can be maintained high while two torsion springs are arranged in one window hole 18, and durability is improved.

Further, by connecting the side surfaces of the float body 5 with the annular connecting body 37 as in claim 3, the connecting body 37 serves as a protective cover for the torsion spring 23, and the torsion spring 23 is provided. Can be protected from outside.

0 If the guide plate 35 and the connecting body 47 are formed as an integral body as in claim 4, and the connecting body 47 is arranged on the inner peripheral side of the float body 25, the number of parts can be reduced. And prevent weight increase.

Further, when the float body 25 is swingably connected to the annular connecting body 37 via the 5-pin 38 as in claim 5, even if the spring load of the torsion spring 23 is imbalanced, it is adjusted to that. The flow By the swinging movement of the body 25, the compression operation of the spring 23 is stabilized, and a smoother torsional performance can be exhibited. Furthermore, the imbalance of the spring load can be absorbed by the swing of the float body 25 around the pin 38, so that the durability of the connection between the annular connector 37 and the float body 25 is improved. While securing the width, the width of the connection portion can be narrowed, whereby a large storage space for the springs 23 can be secured, and a sufficiently wide torsional angle range can be maintained.

As an intermediate plate disposed between the output side hub 10 and the input side side plate 1 according to claim 6, a pair of left and right thick annular 0-shaped intermediate plate members are overlapped and riveted. 7 to form a first-stage torsion spring storage expanded portion 6a at the inner peripheral end, and a torque direct-connecting screw consisting of an uneven portion between the hub 10 and the flange 11 of the hub 10. Forming a topper mechanism saves parts costs.

5 In addition, a pair of thick intermediate plates 6 are provided, and an expanded portion 6a is formed at the inner peripheral end, and the expanded portion 6a and the side plate Hysteresis torque is stabilized by disposing the friction members 13 and 12 between the flanges 11 respectively.

0 Industrial applicability

The damper disk of the present invention can obtain a wide range of torsion angles and a stable hysteresis torque, and is therefore most suitable for a damper disk of an automobile ITJ. Five

Claims

6 Claims

1. Separate the output side plate into a flange integral with the spline hub and the intermediate plate on the outer periphery, place an intermediate plate between a pair of input side plates, and The plate is brought into contact with the second-stage friction member via the second-stage friction member, and the intermediate plate and the flange of the output hub are brought into contact with each other via the first-stage friction member having a low coefficient of friction. A first-stage tl-torsion spring having a small spring constant is disposed in the window hole of the flange and the corresponding first window hole of the intermediate plate, and the flange and the intermediate portion are connected via the first-stage torsion spring. The plate and the plate are connected so that torque can be transmitted, and a second-stage torsion spring with a large spring constant is inserted into the second window hole of the intermediate plate and the corresponding window hole of the side plate. At least two are arranged in series with respect to the hole, and two two-stages arranged in series Eye A damper disk in which a float that can move in the circumferential direction is interposed between the torsion springs, and the intermediate plate and the side plate are connected so that torque can be transmitted through the second-stage torsion spring.

2.A pair of torsion spring arranging windows are formed in each of the pair of input side plates and the output plate between the side plates, and at least two torsion springs are connected in series in the same window. The torsion spring connects the side plate and the output side plate so that torque can be transmitted, and a circumferential direction is provided between the two E-row transition springs in one window hole. A damper disk in which a movable float body is interposed, and the float body is formed of a light plastic material having a low friction coefficient.

3. Between a pair of input side booms A plurality of torsion springs are arranged on each output side plate, and a window hole is formed so that the radially outer end of the output side plate is closed at the radially outer edge of the window hole. At least 25 torsion springs are arranged in series in each window hole of the output side plate, and torque can be transmitted between the side plate and the output side plate by the torsion spring. And a circumferentially movable float is interposed between the two series of torsion springs in each window hole, and the side surfaces of each float are integrally connected by an annular connector. Dambar disk.

04. A plurality of window holes for arranging the torsion springs are formed in the pair of input side plates and the output plate of the side plate ^, and the outer peripheral end of the output plate in the radial direction is formed. Part is formed in a ring shape so that the radially outer edge of the window hole is closed, and at least two torsion springs are arranged in series in each window hole of the output side plate, at least two each. The torsion spring connects the side plate and the output side plate so that torque can be transmitted, and a circumferentially movable float is provided between two serial torsion springs in each window hole. Guide plates are fixed to both sides of the float body in the axial direction with intervening bodies, and an annular connecting body that connects between the zero guide plates is integrally formed at the inner peripheral end of each guide plate. Dunbar disk.

5. A plurality of torsion spring arranging window holes are formed in each of the pair of the input side plate and the output plate of the side plate ^, and each of the window holes of the output plate is provided with a torsion spring. At least two of each are arranged in series, and the torsion spring can transmit torque between the side plate and the output side plate. And a circumferentially movable float is interposed between the two series of torsion springs in each window hole, and each float rest is located in the radial direction more than the float. A damper disk that is swingably connected via a pin to each of the annular connectors disposed on the side.

6. Separate the output side plate into a flange integrated with the spline hub and the intermediate plate on the outer side, place the intermediate plate between the input side plates, and output to the inner side of the intermediate plate. Side hub, and the flange of the hub and the intermediate annular body are connected so that torque can be transmitted through the first-stage torsion spring with a small spring constant, and through the second-stage torsion spring with a large spring constant. The plate and side plate are connected so that torque can be transmitted, and as a middle plate, a pair of left and right thick annular intermediate plate members are overlapped and connected by rivets, and the outer peripheral side of the intermediate plate A second-stage torsion spring placement window hole is formed in this portion, and a first-stage torsion spring storage expanding portion is formed in the inner peripheral end of the intermediate plate, and between the flange and the hub. Consists of irregularities A damper disk with a built-in torque-stopper mechanism and friction members arranged between the expanded part and the side plate and between the expanded part and the flange of the hub.